# Nippon Steel Corporation

Group identifier: aiwaw:nippon-steel-corporation  
Ultimate owner: Ultimate owner not established in GLEIF  
Basis of membership: group as recorded in company documents – Source [C]: Rejestr „Podmioty” – zapis grupy w dokumentach spółek (bez relacji w GLEIF)  
Data as of: 2026-10-18, version 2.22  
Page: https://www.ai-waw.com/en/companies/groups/nippon-steel-corporation

## At a glance

Nippon Steel Corporation – 4 companies in the register with 6 plants in 2 countries (most: Sweden 5, Finland 1). Metals of the plants: stainless steel, alloy steel. Main links of the chain: smelting and refining – 3 plants; processing – 3 plants. Membership follows the group as recorded in company documents, without a GLEIF consolidation relationship.

## Value-chain coverage

| Link | Plants | Stages |
|---|---:|---|
| Raw materials | 0 | – |
| Smelting and refining | 3 | melt shop – engineering special steels (alloy, bearing, spring) 3 |
| Processing | 3 | engineering special steels (alloy, bearing, spring) 2; precision alloy steel strip and wire 1 |
| Products | 0 | – |
| Recycling | 0 | – |
| End uses | 0 | – |

## Plants by country

| Country | Plants |
|---|---:|
| Sweden | 5 |
| Finland | 1 |

## Full capacity by metal and stage

Full capacity of operating single-metal plants – separately for each stage and unit; no sum across stages (a smelter and an extrusion press process the same metal) and no ownership shares in plants (next stage). Multi-metal plants – in the totals table below.

No capacity of operating single-metal plants with a unit.

## Group structure

- **Nippon Steel Corporation** (corporate group; aiwaw:nippon-steel-corporation)
  - [Ovako Bar AB](https://www.ai-waw.com/en/companies/ovako-bar-ab.md) (company; Sweden; LEI 5299001JNEVXVYGBVE49; Business register 5566906102; register · C)
    - Smedjebacken – stalownia i walcownia średnia (Smedjebacken, Sweden) – plant; melt shop – engineering special steels (alloy, bearing, spring); operating; class B
    - Boxholm – walcownie i obróbka prętów ze stali specjalnych (Boxholm, Sweden) – plant; engineering special steels (alloy, bearing, spring); operating; class B
  - [Ovako Imatra Oy Ab](https://www.ai-waw.com/en/companies/ovako-imatra-oy-ab.md) (company; Finland; LEI 529900DZZ1XKZS3WC183; Business register 2067276-0; register · C)
    - Imatra – stalownia elektryczna i produkcja prętów ze stali specjalnych (Imatra, Finland) – plant; melt shop – engineering special steels (alloy, bearing, spring); operating; class A
  - [Ovako Sweden AB](https://www.ai-waw.com/en/companies/ovako-sweden-ab.md) (company; Sweden; LEI 529900JTJLLH7CWQK946; Business register 556692-1317; register · C)
    - Hofors – stalownia, walcownie kęsów, rur i pierścieni (Hofors, Sweden) – plant; melt shop – engineering special steels (alloy, bearing, spring); operating; class B
    - Hällefors – walcownia średnia, obróbka cieplna i ciągnienie prętów (Hällefors, Sweden) – plant; engineering special steels (alloy, bearing, spring); operating; class B
  - [Suzuki Garphyttan AB](https://www.ai-waw.com/en/companies/suzuki-garphyttan-ab.md) (company; Sweden; LEI 529900F8OBRECZ4HKC05; Business register 556030-2886; register · C)
    - Garphyttan – produkcja drutu ze stali węglowej, stopowej i nierdzewnej (Garphyttan, Sweden) – plant; precision alloy steel strip and wire; operating; class B

## Capacity and output of the group companies’ plants

Totals cover the full capacity (and output) of operating plants owned by the group companies, without taking shares in jointly owned plants into account; capacity attributed to the group by share will be added in the next stage. Only values in the same unit and for the same metal are added up.

The plants of the group companies have no capacity or output with a unit in the register.

## Similar groups

Similarity: common metals (weight 0.5), chain links (0.3) and plant countries (0.2) – Jaccard index; only groups with at least one common metal.

- [Swiss Steel Holding AG](https://www.ai-waw.com/en/companies/groups/swiss-steel-holding-ag.md) – in common: stainless steel, alloy steel; smelting and refining, processing
- [GMH Gruppe](https://www.ai-waw.com/en/companies/groups/gmh-gruppe.md) – in common: stainless steel, alloy steel; smelting and refining, processing
- [Rodacciai](https://www.ai-waw.com/en/companies/groups/rodacciai.md) – in common: stainless steel, alloy steel; smelting and refining, processing
- [Outokumpu Oyj](https://www.ai-waw.com/en/companies/groups/outokumpu-oyj.md) – in common: stainless steel; smelting and refining, processing; Sweden, Finland

## Data quality

- Source class of plants: A 1, B 5, C 0
- Plants verified at source: 6 / 6 (2026-10-18 – 2026-10-18)
- Ownership relationships of companies: GLEIF relationship (class A): 0 of 4; group as recorded: 4 of 4; companies with an LEI: 4 of 4
- Basis of membership: group as recorded in company documents (class C)

The group card (page and Markdown) is open to text and data mining with attribution; the JSON data – like the other JSON data of the register – is reserved as a compiled database. Relationships from GLEIF: CC0 1.0.